45.x^(2)+6x-(a^(2)+2a-8)=0

Solve for x: x^(2)+6x-(a^(2)+2a-8)=0

Solve each of the following quadratic equations: x^(2)+6x-(a^(2)+2a-8)=0

If the circle x^(2) +y^(2) -6x -8y+( 25-a^(2) ) =0 touches the axis of x, then a equals.

Solve 3x^(4) -8x^(3) -6x^(2) + 8x + 3 = 0 .

Find the values of x satisfying log_(x^(2)+6x+8)log_(2x^(2)+2x+3)(x^(2)-2x)=0 is

Number of real values of x satisfying the equation log_(x^(2)+6x+8)(log_(2x^(2)+2x+3)(x^(2)-2x))=0 is equal to

Through the point P(3,4) a pair of perpendicular lines are drawn which meet x-axis at the point A and B. The locus of incentre of triangle PAB is (a) x^(2)-y^(2)-6x-8y+25=0 (b) x^(2)+y^(2)-6x-8y+25=0 (c) x^(2)-y^(2)+6x+8y+25=0 (d) x^(2)+y^(2)+6x+8y+25=0